Product Description
MBRP S6032304 is a 4" T304 stainless, filter-back (DPF-back) single-side exhaust system for 2011–2019 GM Silverado/Sierra 2500/3500 HD trucks with the 6.6L Duramax. Built from premium T304 stainless to resist rust and winter brine, it’s engineered for an easy, no-cut, bolt-on install with OEM-style hangers and band clamps.
Fitment
- 2011–2016 Chevrolet Silverado 2500/3500 HD 6.6L Duramax (LML)
- 2011–2016 GMC Sierra 2500/3500 HD 6.6L Duramax (LML)
- 2017–2019 Chevrolet Silverado 2500/3500 HD 6.6L Duramax (L5P)
- 2017–2019 GMC Sierra 2500/3500 HD 6.6L Duramax (L5P)
- Configuration: Crew/Extended/Cab variants; Standard pickups only (chassis-cab excluded)
- Emissions Note: Filter-back (DPF-back) system retains factory emissions equipment
Specifications
| Part # | S6032304 |
| System Type | Filter-Back (DPF-Back), Single Side Exit |
| Material | T304 Stainless Steel |
| Tubing Diameter | 4.0 in |
| Tip | Polished T304, 5.0 in OD (verify) |
| Muffler | None (filter-back) |
| Exit | Side, behind passenger rear tire |
| Clamp Style | Stainless band clamps |
| Hardware | Includes hangers & install hardware |
| UPC | 882663111978 |
| Warranty | Limited Lifetime on T304What’s Included |
- 4" T304 stainless front, mid, and tail sections
- Polished tip (verify size)
- Stainless band clamps & required hardware
- Install instructions
Cross-Reference / Alternatives (MBRP-only)
Looking for alternate materials or styles for the same trucks? See these MBRP systems:
- MBRP S6032AL – 4" Filter-Back Aluminized Steel (link to product on cppdiesel.com)
- MBRP S6032BLK – 4" Filter-Back Black (coated) (link to product on cppdiesel.com)
- MBRP S6032309 – 4" Filter-Back T409 Stainless (link to product on cppdiesel.com)
- MBRP T304 Tips for GM HD – assorted sizes (link to product on cppdiesel.com)
Yes. This is a filter-back (DPF-back) system that retains factory emissions equipment on LML and L5P Duramax trucks.
Do I need to cut or weld anything?
No welding is typically required. The kit is designed as a bolt-on with OEM-style hangers. Minor trimming for wheelbase may be noted in the instructions (verify your cab/bed length).
Is T304 worth it over aluminized or T409?
T304 offers the highest corrosion resistance—ideal for salted roads and coastal climates. Aluminized is the budget option; T409 is a durable mid-tier stainless.
Will this change my emissions status?
No. It’s downstream of the DPF and does not alter emissions equipment.
What tip size is included?
This listing includes a polished T304 tip (commonly 5"). Please verify the included tip size for your exact kit contents.
